* {
  padding: 0;
  margin: 0;
}

button {
  border: 0;
}

input {

  background: none;
  outline: none;
  border: 0px;

}

.head {
  width: 100%;
  height: 70px;
  background-color: rgb(243, 243, 243);
}


.container {
  margin: 0 auto;
  width: 1038px;

}

.logoBox {
  display: flex;
  align-items: center;
  justify-content: space-around;
  width: 325px;
  height: 100%;
}

.logoimage {
  height: 40px;
  width: 40px;
}

.logoText {
  width: 151px;
  height: 27px;
}

.userBox {
  display: flex;
  align-items: center;
  height: 50px;
}

.userImage {
  width: 30px;
  height: 30px;
  background-color: skyblue;
  border-radius: 30px;
  overflow: hidden;
}

.userName {
  min-width: 120px;
  height: 30px;
  margin-left: 10px;
  line-height: 30px;
  font-weight: 900;
  color: rgb(140, 138, 138);

  font-size: 13px;
}

.backTocourse {
  cursor: pointer;
  width: 79px;
  height: 25px;
  background-color: rgb(208, 206, 206);
  border-radius: 25px;

  text-align: center;
  line-height: 25px;
  color: rgb(255, 254, 254);
  font-size: 13px;
}

.body {
  width: 100%;
  margin-top: 30px;
}

.courseMsg {
  width: 1038px;
  display: flex;
  justify-content: space-between;
  height: 300px;
  border: 1px solid rgb(224, 221, 221);
  box-sizing: border-box;
  padding: 20px;
}

.courseImage {
  width: 395px;
  height: 260px;
  background-color: skyblue;
}

.coursemsg {
  width: 530px;
  height: 300px;
  box-sizing: border-box;
  padding: 30px;
}

.courseName {
  width: 100%;
  height: 51px;
  font-size: 20px;
}

.coursePrice {

  margin-top: 37px;
  width: 100%;
  height: 20px;
  color: #919191;
  font-size: 14px;
}

.courseTeacher {
  margin-top: 50px;
  width: 100%;
  height: 20px;
  color: #919191;
  font-size: 14px;
}

.courseBuy,
.courseMessage {
  margin-top: 18px;
  float: right;
  width: 114px;
  height: 39px;
  background-color: rgb(32, 190, 166);
  text-align: center;
  line-height: 39px;
  color: white;
  border-radius: 5px;

}

.courseMessage {
  cursor: pointer;
  background-color: rgb(228, 225, 225);
  margin-right: 20px;
}

.xiangqiang {
  width: 100%;
  border: 1px solid rgb(224, 220, 220);
  border-radius: 5px;

  box-sizing: border-box;
  padding: 20px;
}

.xiangxi {
  margin-top: 20px;

}

.title {
  width: 79px;
  height: 27px;
  border-left: 7px solid rgb(15, 185, 15);
  line-height: 27px;
  text-align: center;
}

.courseIntro {
  margin-top: 30px;
  width: 100%;

  font-size: 14px;
  line-height: 30px;
  color: rgb(172, 171, 171);
}

.userTouxiang {
  width: 35px;
  height: 35px;
  background-color: red;
  border-radius: 27px;
}

.myLiulan {
  display: flex;
  align-items: center;
  height: 100px;
}

.footer {
  margin-top: 20px;
  width: 100%;
  height: 400px;
  background-image: url(../image/Footer.png);
  background-size: 100% 100%;
}

.liuyanInput {
  margin-left: 20px;
  width: 400px;
  box-sizing: border-box;
  border: 1px solid silver;
  padding-left: 10px;
  height: 30px;
}

.submit {
  width: 60px;
  height: 30px;
  background-color: skyblue;
  text-align: center;
  line-height: 30px;

  color: white;
  font-weight: 900;
  margin-left: 20px;
}

.messageItem {
  display: flex;
}

.messageUserimage {
  width: 30px;
  height: 30px;
  background-color: red;
  border-radius: 15px;
}

.message {
  width: 903px;
  margin-left: 16px;
  padding-bottom: 20px;
}

.messageUsername {
  font-size: 12px;
  font-weight: bold;

  color: rgb(99, 99, 99);
}

.liulan {
  margin-top: 10px;
  color: rgb(120, 118, 118);

  font-size: 12px;
}

.messageItem {
  margin-top: 10px;
}

.message {
  border-bottom: 1px solid rgb(219, 216, 216);
}